@ItsSkyDragonz MegaMan.EXE could probably beat him in a heart beat, but he's a computer program so that probably doesn't count.
@ItsSkyDragonz He can survive the destruction of the Internet which is basically the whole universe to him. AFAIK, Kirby can survive a planet's destruction and that's about it.
@ItsSkyDragonz MegaMan.EXE can travel across the Internet within minutes. I'm not sure Kirby's Warp Star can outrun that.
I was actually looking up MegaMan.EXE vs Kirby and just found a Death Battle fannon for MegaMan.EXE and Kirby but it's unfinished. The comments are placing their bets on EXE though.
https://deathbattlefanon.fandom.com/wiki/MegaMan.EXE_VS_Kirby
-stone ability (nullifies all damage except crushing attacks)
-avoiding on warp star/friend star
-consuming entire blast head on with hypernova form
- using crush ability which might match the blast power
(In his hypernova form, he could launch the blast back at him if he does not swallow it)